He Jurgen!
I just modified the german pre with 8 opa's627 and bypassing them + a bigger power supply and al new elko's. It sounds great but I. am still thinking of an Pass pre. I first have to sell the german pre. Greetings teake
p.s You know, for half a year back I had nothing to do with diyaudio and now I am doing evrything. Its a great hobby!
I just modified the german pre with 8 opa's627 and bypassing them + a bigger power supply and al new elko's. It sounds great but I. am still thinking of an Pass pre. I first have to sell the german pre. Greetings teake
p.s You know, for half a year back I had nothing to do with diyaudio and now I am doing evrything. Its a great hobby!
My Aleph
Well, then I will also will post my Aleph
I tried to minimize wiring, as these can introduce all kinds of trouble. The power house is based in its own aluminium box in the middle as containment of the magnetic field.
(that field containment was not fully successfull.
But I learned from my mistakes, and with my Pass ONO I had it pat.)
The soft-start module is completely my own design. It works both with a contact and an external 12VDC signal. It's a 2 relays softstart with all thermistors, etc. in the DC signal path. Startup with four resistors in series, then bridged with the second relays. And it has signals and delivers power for a DC protection when neccesary.
Greetings, Harry
Well, then I will also will post my Aleph
I tried to minimize wiring, as these can introduce all kinds of trouble. The power house is based in its own aluminium box in the middle as containment of the magnetic field.
(that field containment was not fully successfull.
But I learned from my mistakes, and with my Pass ONO I had it pat.)The soft-start module is completely my own design. It works both with a contact and an external 12VDC signal. It's a 2 relays softstart with all thermistors, etc. in the DC signal path. Startup with four resistors in series, then bridged with the second relays. And it has signals and delivers power for a DC protection when neccesary.
Greetings, Harry
Attachments
And this is the backside.
One of the reasons for the long building period is the fact that I wanted to be able to solder the signal wiring, but still be able to dismantle the system. That meant using XLR connectors mounted on the inside. The 24 mm punch I needed for that had 10 weeks delivery time!
One of the reasons for the long building period is the fact that I wanted to be able to solder the signal wiring, but still be able to dismantle the system. That meant using XLR connectors mounted on the inside. The 24 mm punch I needed for that had 10 weeks delivery time!
Attachments
He Harry!
That's great too, man! Did you use KK's boards too?
And WBT terminals? My next step is also getting some WBT's or Eichmanns, I think they are better! Does your ono improve the sound of your turntable? And what kind of pre are you using Harry? Thanks allready for the answers, and greetings Teake.
That's great too, man! Did you use KK's boards too?
And WBT terminals? My next step is also getting some WBT's or Eichmanns, I think they are better! Does your ono improve the sound of your turntable? And what kind of pre are you using Harry? Thanks allready for the answers, and greetings Teake.
Hi Teake,
I do not use WBT connectors, but the cheaper look-alike from Speakerenco. They are almost the same, but you cannot use large spades. (I use WBT bananas). I use these because they work better with "cold connection" than a soldered connection.
The ono is a LARGE improvement on my phono. I will post a new thread this week-end on how I build it, but here is a quick picture from my 20,5 KG heavy ONO.
Right now I am using a passive pre, but I am in the last stages of planning a P1.7 after experimenting with a X-bosoz. (The X-Bosoz has a low WAF factor on volume control). Right now I am using a V-03 balanced kit from www.diyclub.biz without a buffer. This is made up out of 4 boards with 16 relays each and has a remote.
I do not use WBT connectors, but the cheaper look-alike from Speakerenco. They are almost the same, but you cannot use large spades. (I use WBT bananas). I use these because they work better with "cold connection" than a soldered connection.
The ono is a LARGE improvement on my phono. I will post a new thread this week-end on how I build it, but here is a quick picture from my 20,5 KG heavy ONO.
Right now I am using a passive pre, but I am in the last stages of planning a P1.7 after experimenting with a X-bosoz. (The X-Bosoz has a low WAF factor on volume control). Right now I am using a V-03 balanced kit from www.diyclub.biz without a buffer. This is made up out of 4 boards with 16 relays each and has a remote.
Attachments
What a beautyHe Harry!
Great building ono, what pcb's do you use, and other parts?
I will build me one too, O Jacco mayby you get it right, it mayby is getting an addiction. But a nice one! Thanks for the nice reply Jacco and the adress of AVM. You all have a nice weekend! Teake.
Great building ono, what pcb's do you use, and other parts?
I will build me one too, O Jacco mayby you get it right, it mayby is getting an addiction. But a nice one! Thanks for the nice reply Jacco and the adress of AVM. You all have a nice weekend! Teake.
Hi Harry,
Can i have a copy off your "The soft-start module" I'm using a NAD T163 pre with 12 volt output for external amps.😉
Can i have a copy off your "The soft-start module" I'm using a NAD T163 pre with 12 volt output for external amps.😉
intense-tavda said:
Doubtfull if the adress is still valid.
The business card i got from the AVM No-1 guy after a talk i had with him.
That was before his first product was released on the market, some 19 years ago.
Pretty good amplifiers though, great value for money back then.
right one : www.avm-audio.com/company/contact.html
Harry,
is that copper of the sub-chassis in your ONO or just the light ?
Hi Jacco, The left part is 6mm copper. The right part is MuMetal/Bitumen/Aluminium/Copper/Aluminium. Tomorrow I will start a new thread on the ONO.
Greetings, Harry
Berry, Leeuwarden,
As this was my first design in PCB, I only ordered a batch of 10 PCB's. The parts are all from Conrad, excepting the special startup resistors. (these are special overload resistors)
Leeuwarden, were you not busy finishing another softstart PCB?
You can both get a PCB (and the resistors) at cost. I am very busy right now finishing a lot of stuff before my two week holiday, and I am not sure I can get a complete BOM/schematics finished before then.
I promise a PM in the second week of january.
Greetings, Harry
As this was my first design in PCB, I only ordered a batch of 10 PCB's. The parts are all from Conrad, excepting the special startup resistors. (these are special overload resistors)
Leeuwarden, were you not busy finishing another softstart PCB?
You can both get a PCB (and the resistors) at cost. I am very busy right now finishing a lot of stuff before my two week holiday, and I am not sure I can get a complete BOM/schematics finished before then.
I promise a PM in the second week of january.
Greetings, Harry
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